Boring-machine.



BORING-MACHINE.

Specieationof Letters Patent.

IPatented July 13, 1915.

Application led January-5, 1915. 'Serial No. 626.

To all 'whom it may concern f Be it known that we, ApoLPH STORM and EDWARD C. OHAIR, citizens of the United States, residing at Thompson, in the county of WinnebagdState Aof Iowa, have invented certain new and useful Improvements in lvoring-Machines;v and we do hereby declare the following to be a full, clear, and exact description of the invention, suchias will enable others skilled in the'art to whichit appertains to make and use the same.

This invention relates to boring machines and particularly to a type adapted for use in reboring the cylinders of explosive'en-- gines. V p

The object of the invention resides in the provision of a device of the character named embodying an improved construction whereby the reboring of cylinders may be accomplished in an efficient, easy and quick manner.

A further object ofthe invention lresides lin the provision ofa device of this character which can be used in connectionwith cylinders 'of different diameters, and which can be manufactured at a comparatively small cost. l

g With the above and other objects in vijew the invention consists in the details of construction,l and in the arrangement and combination of parts to be hereinafter more fully described and particularlypointed out in the appended claims.

In describing the invention in detail refv `with exterior threads 27 ofthe right handl type. The end of the bar 26 remote from the;

erence will be had' to theaccompanying drawings wherein like characters of reference denote corresponding parts in the sev- 'eral' views, and in whichi Figure 1 is a vertical section through the cylinder of an explosive engine showing the invention applied; Fig. 2, a vertical section i through the invention; Fig. 3, 4a plan view of what is shown in Fig. 1; Fig. 4, a section .on the line llof Fig. 2; Fig. 5a section on the line 5-5of Fig. 4, and Fig. 6, a perspectiveyiew of the feed plate holder.

Referring to the' drawings the invention .e is shown as comprising a circular head 10"4 der.l `Su'pp'orgted,up having a circumscribing groove 1-1 formed in its periphery, the head being wider on' one side of said groove than on the other. The head 10 is provided with a central longitudinal passage 12 and a plurality o f radial passages 13 ,communicating at their inner ends with the passage 12. The outer ends of these passages 13 open through the bottom of the groove 11. Slidably adjustable in each passage 13 is a cutter 11 the inner end of which is beveled as at l5. The

passage 12 on one side of the passages 13 is threaded as at 16 and also threaded on the other side of said passages 13 as at 17. Engaged with the threads 16 is a cutter adjusting head 18 having a tapered portion 19 adapted for coperation with the beveled ends 15 of the .cutters 14 and whereby longitudinal adjustment of the head 18 in one direction will force said cutters outwardly in respective'passages 13 and thus feed the cutters to the works. The cutters 14 are locked in any desired adjustment by means of locking bolts 20 extending longitudinally through the head 10 .and having inclined portions 21 engageable with respective cut- -te'rs 11 to clamp same against movement,

' a suitable tool to effect desired adjustment of the cutters.. vThe head-18 is also provided= on the end thereof remote from the stem 23 A with a squared extension 25 so that the ad-1 Justinent of the head may be effected with a suitable to'ol from either end. The stem 23 issurrounded by a tubular bar 26, the entire l 1 exterior of which lthat is disposed withoutg the limits ofthe head 10 being provided head 10 is providedwith a squared portionv l28 whereby said. bar may be readily rotated through the medium of a Wrench or other.`

The inventionfurther vembodies an annular feed plate rest 29 adapted to engage one end of the cylinder` 32 as shown in Fig. 1.

-The inner face of the lrest=f29 is engaged by a split ring ovdisposedjvitliin vthe cylinder and servingjt 'hold the rest 29 against I lateral movemeii' withrespect to the cylin- V e '-on'the lfeed plate rest2 9 is a feed plated?, the periphery of which 1s detachably interlocked Vwith the rest 29 as y of a holder plate 35 having a central openvaried to adapt same to' bores of differenti.

' cutters may ing 36iwhich engages over a boss 37 on the Y feed plate 33.l The` holder plate ispro'- l vided with 'oppositely disposed arms 38 havj ing .slots 39 thereinthrOugli which'are adapted to be. einfgagedA bolts 40 passed passage-at'their inner ends, a cutter mount-- through the securing bolt openings at the baseoi' the cylinder.. In this manner the entire device will be securely clamped to the cylinder during the operation of boring.`

The diameter of the head 10 may be diameters by. the use of-detachable rings 41 applied as shown in Fig. 2. The head 10 is provided with longitudinal passages 42' ythrough which the chipsint'he ation of boring are adapted to escape. 'a

In' operation the device is inserted in the shown in Eig. l, the cutters having been previously adjusted. However the applied. To then veiiect the operation of boring it is only necessarylto gotate thebar 26 to the right and during. this operation the threads- 27 and the threads of thefpassage '34 will serve to progressively feedthe'- head-I '10 and the of the cylinder.` What lis claimed is z-- feed bar secured to the head for rotating the latter, a feed plateprovided with means for securing same to one end of a cylinder to be bored and having'operativeconnection to be adjusted after the device is .cutters 14 towardthe closed endv i l l il rotation ofthe feedbar in onev direction will A-vWitnesses: c

2.`Inay -boring machineof thel class desages communicating 'with the longitudinal ed in each of said radial a;ssagesfrespec tively, an adjusting head threadedin. the

-the'feed bar wherebyithe rotation ofsaid feed bar will move the head longitudinally. y

lasv

longitudinal passage and having a tapered I portion cooperating with the inner ends of vthe` cuttersvvhereby the rotation of the adjusting head in one direction will move said vcutters longitudinally, means for locking` the cutters againstlongitudinal movement',`

and means for rotating the first named head.

3. In a boring machineof the class described,ithe combination of a head.,` radial cutters adjustablymounted in'fthe'. head, a

*feed bar secured to the head 'ffor rotating the .latter and having exterior threads/'5; and a feed plate provided with means for securinglsame to a cylinderto be bored, said feed plate having a threaded passage lthrough which the feed bar extends, the threads on4 the feed bar operatively engag-y ing the threads in said passage whereby the move lthe head towardv the feed plate.

`In testimony whereof, we afx our signaturesin the presence of two witnesses. "'ADOLPH STORM.

' EDWARD' C.IOHAIR. 

